Propensity score adjustments using covariates in observational studies
In this thesis we develop a theoretical framework for the identification of situations where the equal frequency (EF) or equal variance (EV) subclassification may produce lower bias and/or variance of the estimator. We conduct simulation studies to examine the EF and EV approaches under different t...
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| Language: | en_US |
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2011
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| Online Access: | http://hdl.handle.net/1957/26304 |